[1] Umea Univ Hosp, Dept Lab Med, Ctr Blood, SE-90185 Umea, Sweden
[2] Umea Univ Hosp, Dept Clin Microbiol, SE-90185 Umea, Sweden
[3] Umea Univ Hosp, Dept Lab Med Transfus Med, SE-90185 Umea, Sweden
[4] Umea Univ Hosp, Dept Community Med & Rehabil Rehabil Med, Dept Surg & Perioperat Sci, SE-90185 Umea, Sweden
[5] Umea Univ Hosp, Heart Ctr Clin Physiol, SE-90185 Umea, Sweden